{
  "schema": "varexis-public-evidence-record/0.3",
  "generated_at_utc": "2026-10-16T02:40:06.177Z",
  "record_id": "VXI-EXT-PROCUREMENT-GITHUB-ATTESTATION-01-v1",
  "record_kind": "external_reference",
  "title": "GitHub attestations: Verified provenance is not a security verdict",
  "system": "GitHub Actions",
  "evidence_family": "vendor_evidence_review",
  "index_status": "PUBLIC_SAFE_SOURCE_REVIEW",
  "evidence_state": "PRIMARY_DOCUMENTATION_REVIEW_ONLY",
  "canonical_question": "Does a valid GitHub artifact attestation prove the artifact is secure to run?",
  "near_questions": [
    "Does an attestation guarantee secure software?",
    "Must the consumer verify the attestation?",
    "Which digest identifies the downloaded artifact?",
    "Does the attestation identify the build workflow?",
    "What policy checks remain after verification?",
    "Do public and private repositories use identical transparency infrastructure?",
    "Can a valid signature cover unwanted code?",
    "Does publication prove a consumer checked it?",
    "Which source revision produced the artifact?",
    "What unresolved evidence should procurement retain?",
    "When should an agent refuse a security-clearance claim?",
    "Can I save an attestation-policy review?"
  ],
  "supported_claims": [
    {
      "claim": "Attestations bind artifacts to source and build context. The documentation says they must be verified to provide benefit and explicitly rejects treating them as a guarantee of artifact security. The consumer still needs policy criteria and evaluation of the referenced build and content.",
      "reliance": "DOCUMENTED_CAPABILITY_ONLY"
    }
  ],
  "not_demonstrated_claims": [
    "Verified buyer configuration or effective access rights",
    "Independent execution, completeness or security testing",
    "Vendor certification, legal compliance or guaranteed suitability"
  ],
  "public_summary": "Attestations bind artifacts to source and build context. The documentation says they must be verified to provide benefit and explicitly rejects treating them as a guarantee of artifact security. The consumer still needs policy criteria and evaluation of the referenced build and content.",
  "related_record_ids": [
    "VXI-EXT-PROCUREMENT-DOCKER-DIGEST-UPDATES-01-v1",
    "VXI-EXT-PROCUREMENT-NPM-PROVENANCE-01-v1",
    "VXI-EXT-PROCUREMENT-PYPI-TRUSTED-PUBLISHER-01-v1",
    "VXI-EXT-PROCUREMENT-GITLAB-IMMUTABLE-TAGS-01-v1",
    "VXI-EXT-PROCUREMENT-ARTIFACT-CLEANUP-01-v1"
  ],
  "source_review": {
    "source_type": "official_external_documentation",
    "source_title": "GitHub artifact attestation provenance",
    "source_url": "https://docs.github.com/en/actions/concepts/security/artifact-attestations",
    "checked_on": "2026-10-16",
    "candidate_record_id": "VXI-EXT-PROCUREMENT-GITHUB-ATTESTATION-01-v1",
    "candidate_record_sha256": "87b061ebb9c132a9b9ced01f869a823234bcd39168f8c45f37b02d6eb5c3f477",
    "method": "Primary documentation reviewed for the published bounded statement.",
    "deployment_tested_by_varexis": false,
    "revalidation": "The delivered snapshot preserves the review date shown. Recheck current primary documentation and deployment context before relying on present applicability; payment does not trigger fresh research."
  },
  "answer_policy": {
    "classification": "DOCUMENTED_WITH_DEPLOYMENT_BOUNDARY",
    "bounded_answer": "Attestations bind artifacts to source and build context. The documentation says they must be verified to provide benefit and explicitly rejects treating them as a guarantee of artifact security. The consumer still needs policy criteria and evaluation of the referenced build and content.",
    "required_buyer_context": "GitHub Actions: Artifact digest, build identity, verification result and consumer policy; buyer configuration and operational evidence are required.",
    "missing_evidence": "A broader claim needs evidence matching the intended use. Payment does not upgrade the evidence state."
  },
  "private_boundary": "Raw logs, thresholds, private paths, source code, protected mechanisms and reconstruction-level details are excluded from public and paid delivery.",
  "decision_profile": {
    "schema": "varexis-vendor-evidence-review/1",
    "review_status": "documentation_review_only",
    "checked_on": "2026-10-16",
    "claim_to_check": "A published attestation independently clears an artifact for execution.",
    "documented_statement": {
      "status": "documented",
      "statement": "Attestations bind artifacts to source and build context. The documentation says they must be verified to provide benefit and explicitly rejects treating them as a guarantee of artifact security. The consumer still needs policy criteria and evaluation of the referenced build and content.",
      "source_ids": [
        "github-attestation"
      ]
    },
    "buyer_evidence_required": [
      "Exact artifact digest and verified attestation result.",
      "Expected source, workflow and build identity.",
      "Consumer policy evaluation and unresolved content risks."
    ],
    "review_condition": {
      "status": "varexis_review_policy",
      "statement": "Do not substitute signature verification for an execution-suitability decision."
    },
    "unknowns": "The buyer configuration, contract, effective entitlement and operational evidence have not been inspected. Missing evidence does not establish absence or failure of the feature.",
    "evidence_sources": [
      {
        "source_id": "github-attestation",
        "url": "https://docs.github.com/en/actions/concepts/security/artifact-attestations",
        "final_url": "https://docs.github.com/en/actions/concepts/security/artifact-attestations",
        "title": "GitHub artifact attestation provenance",
        "checked_on": "2026-10-16",
        "sha256": "7e3765eafe9892dc9df2eec65084cb9cabba914bf13d89c6f506de92b5caea3c",
        "bytes": 298106
      }
    ],
    "observed_deployment": false,
    "commercial_reliance_boundary": "Procurement evidence support only; no supplier clearance, legal conclusion, configuration audit or verification of the buyer's claim is supplied.",
    "paid_value": {
      "decision_context": "Preserve the provenance check and remaining policy questions for an artifact decision.",
      "free": "Complete review, practical questions, sources and limitations; may be saved locally.",
      "single_request": "Existing server-saved version-bound route snapshot for later authenticated retrieval.",
      "evidence_receipt": "The same snapshot plus the existing unsigned delivery receipt.",
      "excluded": [
        "Fresh vendor research",
        "Continuous monitoring or change alerts",
        "Testing the buyer configuration",
        "Private evidence or vendor certification"
      ],
      "integrity": "Hashes identify content versions; they do not prove truth or provide a signature."
    },
    "revalidation": {
      "trigger": "A saved purchase does not recheck the source or buyer configuration.",
      "specific_watch": "Artifact digest, build identity, verification result and consumer policy"
    }
  },
  "paid_access_note": "The full published answer and boundaries are free. Paid access saves the selected route and source versions, with an unsigned receipt when purchased. Preview coverage before paying. Fresh research, bespoke assessment and protected evidence are excluded.",
  "service_route": {
    "request_guide": "/varexis-index/request.html",
    "request_workflow": "/varexis-index/request-workflow.json",
    "service_id": "single_request",
    "service_routes_url": "/varexis-index/service-routes.json",
    "payment_required": true,
    "availability_endpoint": "/api/index/capabilities",
    "operational_status": "AUTOMATIC_SERVICE_CAPABILITIES_GATED",
    "checkout_url": "/index-access"
  },
  "authority_boundary": "VAREXIS-INDEX informs evidence reliance. It does not provide advice, certification, deployment authority, security assurance, production approval, or guarantee.",
  "human_page": "/varexis-index/catalog.html#github-artifact-attestation-policy-boundary",
  "machine_readable_record": "/varexis-index/records/github-artifact-attestation-policy-boundary.json"
}